Ds1 Output Module; Functional Overview; Block Diagram Of The Ds1 Output Module - Symmetricom SSU-2000 User Manual

Chapter 8 Output Module Reference Data

DS1 Output Module

DS1 Output Module
This section provides user-reference data for the DS1 Output module (part number
23413017-000-0) used in both the SSU-2000 main shelf and in the optional
SDU-2000 Expansion shelf.

Functional Overview

The DS1 Output module generates a phase-locked signal of 1.544 MHz using one
of three 4 kHz clocks from the backplane of the SSU-2000 main shelf (A, B, and, C
clocks). If the module is inserted into the SDU-2000 Synchronization Distribution
Unit (expansion shelf), a fourth 4 kHz clock (D clock) is available. The phase-locked
signal generates a set of 20 output signals for distribution to large networks. A
simplified block diagram of the DS1 Output module is shown in
Figure 8-3.

Block Diagram of the DS1 Output Module

The output SSM can be automatically set by the input signal or manually using an
ICS or TL1 command. See the SSU-2000 Technical Reference for details on setting
the output SSM.
208 SSU-2000 User's Guide
Figure 8-3.
12713020-002-2 Revision F.01 – January 2007